Munich: Pep Guardiola has cast doubts over Bastian Schweinsteiger's fitness by revealing the Manchester United midfielder has not been problem-free for three years.


Pep Guardiola. Pic/AFP 

Schweinsteiger, who spent 16 years at Bayern, moved to United earlier this summer but Guardiola stressed first and foremost the Red Devils have to get the World Cup winner back to peak condition.